Computer Science
Scientific paper
Jun 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994p%26ss...42..441c&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 42, no. 6, p. 441-446
Computer Science
Aluminum Alloys, Aluminum Oxides, Earth Atmosphere, Meteorites, Reentry, Simulation, Space Debris, Spectral Signatures, Spectroscopic Analysis, Experiment Design, Laboratory Equipment, Spacecraft Breakup, Spectrographs, Spectrum Analysis
Scientific paper
In order to distinguish between the re-entry into the Earth's atmosphere of a man-made object, such as a fragment of a satellite, and a natural meteorite, we have performed a series of tests in which high time resolution spectroscopy has been used to record the spectrum of aluminium alloy projectiles travelling at 9.7 +/- 0.05 km/s in a rarefied atmosphere, at the pressure existing on Earth at 65 km altitude. A strong emission was found in the coma, corresponding to the five emission bands of the excited metastable aluminium monoxide molecule, AlO. Emissions from atmospheric gaseous components appeared super-imposed on the emission bands of the AlO, which grow weaker with the time evolution of the trail.
Coradini Marcello
Giblin Ian
Martelli Gianpasquale
Mottola Stefano
Smith P. N.
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